Sofa



FIG. 1 is a front perspective view of a sofa embodying my design;

FIG. 2 is a top plan view of FIG. 1; and

FIG. 3 is a right side view of FIG. 2.

The rear surface of the sofa is plain and unornamented, and conventionalin configuration.

The ornamental design for a sofa, as shown and described.